The point guard who has been sidelined since Nov. 10 because of nerve damage in his back says he doesn't know when he will be able to play for a sustainable period.

One-half of the Lakers' 30-something backcourt returned to action Sunday. But what about Steve Nash?

"I don't know," the injury-riddled point guard said several hours before Kobe Bryant played against Toronto.

"I had three good days of practice and I could play right now, but we don't really have any confidence that it's sustainable. Instead of playing, missing a few weeks, playing, missing a few weeks … try to get to a place where I could play and sustain it. We don't know when that is right now."

Nash has played in only six games this season, sidelined since Nov. 10 because of nerve damage in his back.

When he's played, he hasn't been effective — 6.7 points and 4.8 assists a game.

He probably won't play in the Lakers' trip that starts Friday in Oklahoma City. It's four games in five nights.